Curtain cord attachment clip



Nov. 29, 1949 G. F. NUREINBERG ET AL 2,489,460

CURTAIN CORD ATTACHMENT CLIP Filed Aug. 21, 194e Cm NTON M. EVA Ns.

ATTOR NEYS.

INVENTORS. l GEORGEENURENBERG.

Patented Nov. 29, 1949 cURfinLnNt conn ATTACHMENT CLIPA George F. Nurenber'g, Trenton, and Clinton/1* M fEvans; Bordentown, N. TJ.

v Application August 21, 1946,#Serial-N0L69L912 m y* 3 Claims. l

The pull cords 4'foxwwindow curtains of the conventional roll type are commonlyfattachedfto theft wooden cross-.piece used at.the lowerzend of the roll, by boring transversely through the cross piece,iins'erting a hollow rivetand threading the`4 pull cord I through the hole thus formed.' This forms a more'sec-ure attachment, and of better appearance,lthanthe Screweyes which are sometimes insertedinto -the bottom of `the cross piece; but is expensive to vapplyand :Iequrestheuse of special tools. L:

The primary purpose of the present inventionv is to provide a sheet metal clip'o'f such construction that lther pull 'cord maybe looped through it, and the clip then engaged by finger pressure with the cross piece, to form an inexpensive attachment of good appearance which may be simply and quickly applied without requiring special tools or skill, and which will not work loose in use. Further objects and advantages of the invention will be in part obvious and in part Specifically pointed out in the description hereinafter contained which taken in conjunction with the accompanying drawings, discloses a clip of preferred form which is constructed to operate in accordance with the invention; the disclosure however should be considered merely as illustrative of the principles of the invention in its broader aspects. In the drawings:

Fig. 1 is a general front elevation of a curtain roll, and pull cord attached thereto by a clip of the construction shown more in detail in the subsequent figures.

Fig. 2 is an enlarged side View showing one of the clips in operating position.

Figs. 3 and 4 are sections taken respectively on the lines 3-3 and 4--4 of Fig. 2 looking in the direction of the arrows.

Fig. 5 is a perspective view showing one of the clips detached.

Fig. 6 is a plan view showing a clip blank.

In Fig. 1 I have shown a curtain l of the conventional roll type, having a wooden cross piece 2 at its lower end, to which a pull cord 3 is attached by a sheet metal clip of the hereinafter described construction and mode of operation.

The clip is provided with opposed face portions 4 which are connected by a U-shaped relatively narrow neck portion 5. The neck portion 5 is preferably of channeled cross section, in such manner that when the opposite face portions 4 of the clip are pressed into engagement with the wooden cross piece 2 as hereinafter described, the base of the neck retains its bowed shape, i. e. the neck 5 resists distortion when the clip is pressed 2 into operating' position,- and the sides ofthe U i bendrtb "cause the face.portions.4 to assume thel` positions shown in `Fig.` 3 where theyare .parallel to 'the opposite upwardly converging side walls of the cross piece 2. Beforeengagement with the cross .piece the'pull cord` is looped through the neck 5 as shown in Figs. 2 and 3. Theopposite face portions 4 of the clip are of dishedshape, 2 their inner vfaces Ybeing concave, and prongs 6 are' lstruck inwardly 'so as toiextend at right angles to respective generalplanes 'of the face portions 4. These prongs 6 are provided at substantially" diametr'ically"'o'pposite` points in the peripheral obliquely directed rim portions 1 of .the face por-` tions 4', and 1ie` 'substantially inA a common plane directed transversely of the clip and perpendicular to the planes of the respective face portions 4.

The clip is pressed by pinching, iinger pressure, into the position shown in full lines in Fig. 3 and the sheet metal of the face portions 4 being somewhat yielding and elastic, will tend to give somewhat as the pressure is applied, the clip beling preferably of sheet steel, although it may be constructed of any other appropriate material. When the iingerpressure is released, the face portions 4 will tend to spring outwardly somewhat, but this will not loosen the prongs 6 with respect to cross piece 2 since the outward spring of the faces 4 will tend to embed the prongs 6 more firmly in the cross piece. Also it will be noted that the prongs 6 are directed at a Very blunt angle to each other as shown in Fig. 3, so that downward tension on the cord 3 tends to engage the clip more firmly with the cross piece. The clip is also firmly resistant to rocking or twisting stresses which may be applied if the cord 3 be pulled obliquely, since the location of the prongs 6 at the opposite sides of the respective faces, in combination with the relatively narrow centrally located neck portion, will absorb normal twisting stresses without loosening up the prongs from the cross piece.

While the invention has been disclosed as embodied in a clip of the above described specific form, it should be understood that changes may be made therein without departing from the invention in its broader aspects within the scope of the appended claims.

We claim:

1. A curtain cord attachment clip having opposed face portions connected by a U-shaped relatively narrow neck portion, said face portions being of dished shape and their inner faces being concave, the central areas of said face portions being elastically yieldable toward each 4 tion, said face portions being of dished shape and their inner faces being concave, the central areas of said face portions being elastically yieldable toward each other under manual pressure when pinched together, and the peripheral portions of each of said face portions having thereon a pair of inwardly projecting prongs located at substantially diametrically opposite points on the respective face portions and near the boundaries of said central areas, whereby. said central areas may spring away from each other when pinching pressure is released, without loosening 2. A curtain cord attachment clip having opl posed face portions connected by a U-shaped relatively narrow neck portion, said face portions being of dished shape and their inner faces being concave, the central areas of said face portions being elastically yieldable toward each other under manual pressure when pinched together, and the peripheral portions of each of said face portions having inwardly projecting prongs located near opposite side edges of said face portions and near the boundaries of said central areas, whereby said central areas may spring away from each other when pinching pressure is released, without loosening the aforesaid prongs from clip attaching relation, the above mentioned prongs of each of said face portions lying substantially .in a common plane directed transversely of the clip, said neck portion being of channeled cross section.

3. A curtain cord attachment clip having opposed face portions of substantially circular configuration and connected by a U-shaped relatively narrow neck portion of channeled cross secthe aforesaid prongs from clip attaching relation,

` the above mentioned prongs of each of said face portions lying substantially in a common plane directed transversely of the clip.

GEORGE F. NURENBERG. CLINTON M. EVANS.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS 

